Brake-shoe.



A. G. OLBERDINGKL T. ELLIOTT.

BRAKE SHOE.

APPLICATION FILED JAN.26. I915.

' Inventors by WWW ZQKLW W UNTTED %TATE% PATENT OFFTQE.

ANTHONY G. OLBERDING AND THOMAS ELLIOTT,

OF CINCINNATI, OHIO, ASSIG-NORS TO AMERICAN BRAKE SHOE & FOUNDRY COMPANY, OF MAHWAI'I, NEVT JERSEY, A

CORPORATION OF NEW JERSEY.

BRAKE-SHOE.

Specification of Letters Patent.

Patented July 6, 1915.

To all whom it may concern:

Be it known that we, ANTHONY Gr. OLBER- DING and THOMAS ELLIOTT, citizens of the United States, and residents of Cincinnati, county of Hamilton, and State of Ohio,have made and invented certain new and useful Improvements in Brake-Shoes, of which the following is a specification.

This invention relates to brake shoes, an object being to provide a shoe which may be directly secured to either end of the brake beam, thus avoiding the necessity of providing. a separate head, and also rendering unnecessary right and left-hand shoes.

A further object is to provide a brake shoewith an attaching lug, so formed and positioned upon the shoe as to render the same reversible with regard to the ends of the brake beam.

A further feature resides in the provision of transverse grooves at the terminal or base of the attaching lug, to thus insure accurate contact between, and the proper alinement of, the brake beam and shoe, whereby a substantially uniform wear of the shoe will be had.

A further object is the provision of a shoe with a centrally disposed symmetrical attaching lug, so designed and arranged that it may be directly secured to the brake beam, and for which purpose it is provided with a transversely extending hub or post, with roundedv side walls, insuring the accurate fitting of a U-bolt thereagainst, as well as providing for the positive securement of the shoe to the brake beam.

Other objects will appear as the description proceeds, wherein it is to be noted that changes in the precise embodiment of the invention can be made within the scope of what is claimed, without departing from the spirit of the invention.

The preferred embodiment of our invention is disclosed in the accompanying drawings, wherein:

Figure 1 is a view in side elevation of a brake shoe embodying the features of our invention. Fig. 2 is a top plan view thereof. Fig. 3 is a cross-sectional view taken on the line 33 of Fig. 1; Fig. 4: is a fragmental view in side elevatlon of the central portion of the shoe, portions of the same, and the integral attaching lug, being broken away to more clearly disclose certain structural features thereof.

Referring to the several views wherein simllar reference numerals designate corresponding parts throughout, the body of the shoe 5 tapers from its center 6 toward its two extremities 7, so that when the shoe is supported at its center, and is subjected to a uniform pressure upon its wearing face 8, due to contact with a car wheel, the two portions of the shoe, which project to opposite sides of the center 6, will be of sub stantial uniform strength, allowing the shoe to be worn almost entirely away; thus reducing to a minimum the amount of metal remaining in the shoe when scrapped.

Projecting from the back of the shoe, is the integral lug 9, of such form and construction as to render an additional brake head unnecessary, and providing for the direct securement of the shoe to a brake beam, and accomplishing the foregoing in a manner whereby the shoe will be in exact and proper alinement with the brake beam, and whereby a substantially uniform wear of the shoe will result.

The lug 9 tapers toward its upper extremity as illustrated in Fig. 1, and is pro vided with the symmetrically disposed inclined faces 10-10. The inclined faces 10-10 terminate at the transverse grooves 12, which extend entirely across the shoe and mark or define the juncture between the back of the shoe body and the base of the lug. The inclined faces 1010 are adapted to receive a brake beam thereagainst, and in order to insure the accurate alinement of the brake beam and shoe, the latter is provided with the transversely extending ledges, or dressed surfaces 13-13, upon which the edge of a brake beam is adapted to rest. The proper alinement between the brake beam and shoe will therefore depend upon the proper contact between the brake beam and the said ledges and inclined faces of the lug. It is therefore essential that the corner or corners between the ledge and the adjacent inclined'face of the lug be sharp, and free from small fillets of metal. In

order to prevent this occurrence of metal at the corners, as above mentioned, we provide suitable grooves 12 so located as to constitute or form indented corners between the meeting terminals of the faces and ledges upon which the brake beam is supposed to simultaneously rest. These grooves do not extend to such depth in the shoe as would cause any material weakening thereof; this being especially true in that they occur at the central and thickened portion of the shoe body, as will appear by reference to Fig. 1 of the drawings.

The lug 9 is formed with the two sides 99, between which extends the hub or rounded post 15, allowing a U-bolt 16 to pass therearound, and to fit snugly thereagainst, the lug being provided with a cored opening 20 for the reception of one leg of the U-bolt, through which the latter extends. The U-bolt passes around the said hub, which is positioned about midway of the height of the lug sides, and extends through suitable openings 17 in the brake beam and is rigidly secured thereagainst by the holding nuts 18, or analogous means. The hub, in addition to being of circular cross-section, as illustrated'in Fig. 4, is also curved or rounded in its length, as illustrated in Fig. 2, thus providing for the accurate seating of the U-bolt, and allowing the brake shoe to so adjust itself, that the ledge 13 lies in superficial contact with the lower edge 19 of the brake beam, and at the same time the inclined face 10 of the lug is drawn tightly against the contiguous face of the v brake beam.

The weight of the shoe when scrapped, is materially reduced, without materially interfering with the proper or requisite strength thereof, by cutting away the top of the lug sides, to thus form the transversely extending openings or channels 21. It is to be noted, however, that the semicircular formation of the channels 21 provides or forms the upstanding corners 22, which are amply sufficient to prevent the lateral movement or disengagement of the U-bolt, and accurately guide the latter to its seated position during the process of securing the shoe to the brake beam.

What we claim is 1. An article of the class described, comprising a shoe body, a lug projecting therefrom and provided with an inclined face, the back of said shoe body adjacent said inclined face provided with a supporting ledge, said shoe body provided with a transversely extending groove at the base of said lug and forming a depressed corner between said ledge and inclined face.

2. An article of the class described comprising a shoe body, a lug projecting therefrom and provided with an inclined face,

metrically disposed inclined faces, said shoe body provided with ledges extending at right angles to the said inclined faces of the lug and positioned adjacent the lower extremities of said lug, said lug provided with grooves extending transversely of said shoe body and below the surfaces of said ledges and forming depressed corners between said inclined faces and ledges.

4. A brake shoe comprising a shoe body with a thickened center portion, a lug projecting from the back thereof and formed integral therewith, said lug provided with an opening extending therethrough, said lug including spaced side plates and a hub extending therebetween, said hub of rounded cross-section and provided'with a surface, curved in its length, said lug provided with inclined faces, said shoe body provided with ledges, and transversely extending grooves defining depressed corners between said ledges and the inclined faces of said head.

5. A brake shoe comprising a body, a lug carried thereby, said lug including spaced sides and a hub projecting therebetween intermediate the ends thereof, said hub of rounded contour and increasing in thickness from its center toward its ends.

6. A brake shoe comprisinga body,-a centrally disposed attaching lug carried thereby and including a transversely extending rounded hub, said lug provided with an opening extending beneath said hub adapted to receive the one leg of a U-bolt therethrough, said hub positioned'below the upper extremity of said lug and provided with a surface curved in its length. 7

7. A brake shoe attachinglug comprising sides, a transverse hub extending therebetween intermediate the ends thereof, said hub of rounded contour and provided with a surface curved in its length, whereby said hub increases in thickness from the center toward its ends, said hub adapted tojreceive a U-bolt thereagainst, the lug sides projecting above the said hub and adapted to hold the U-bolt against displacement.

8. A brake shoe comprising a body, a centrally disposed attaching lug projecting therefrom and provided with inclined faces, the back of said shoe body adjacent said inclined faces provided with supporting ledges, said shoe body provided with transversely extending grooves defining depressed and State of Ohio, this 19th day of January, corners between said ledges and inclined 1915.

faces, said lug including spaced sides, and ANTHONY G. OLBERDING. a rounded hub projecting therebetween in THOMAS ELLIOTT. 5 termediate the ends thereof, and With the Witnesses:

surface of said hub curved in its length. J. A. KASHBAUM,

Signed at Cincinnati, county of Hamilton FRANK G. DIEHL.

Copies of this patent may be obtained for five cents each, by addressing the. Commissioner of Patents, Washington, D. C. 

